Ishfaq Ahmad (Urdu: اشفاق احمد; born 3 November 1930; D.Sc., Minister of State, ), is a Pakistani nuclear physicist, emeritus professor of high-energy physics at the National Center for Physics, and former science advisor to the Government of Pakistan.

Ishfaq Ahmad (Urdu: اشفاق احمد; born 3 November 1930; D.Sc., Minister of State, ), is a Pakistani nuclear physicist, emeritus professor of high-energy physics at the National Center for Physics, and former science advisor to the Government of Pakistan. A versatile theoretical physicist, Ahmad made significant contributions in the theoretical development of the applications and concepts involving the particle physics, and its relative extension to the quantum electrodynamics, while working as senior research scientist at the CERN in 1960s and 1970s. Joining the PAEC in late 1950s, Ahmad served as the director of the Nuclear Physics Division at the secret Pinstech Institute which developed the first designs of atomic bombs, a clandestine project during the post-1971 war. There, he played an influential role in leading the physics and mathematical calculations in the critical mass of the weapons, and did theoretical work on the implosion method used in the weapons. Since 1960s and onwards, he has been a high-ranking official at the IAEA as part of the Pakistan Government's official mission, working to make the peaceful use of nuclear power for the industrial development. Having chaired the PAEC from 1991 until 2001, he has been affiliated with the Pakistan Government as a Science adviser to the Prime minister on strategic and scientific programs, with the status of Minister of State. A vehement supporter for the peaceful use of nuclear energy, he earned public and international fame in May 1998 when he oversaw and directed PAEC to perform country's first public atomic tests (see Chagai-I and Chagai-II) in a secret weapon-testing laboratories in Balochistan Province of Pakistan. (en)

Ishfaq Ahmad (Urdu: اشفاق احمد; born 3 November 1930; D.Sc., Minister of State, ), is a Pakistani nuclear physicist, emeritus professor of high-energy physics at the National Center for Physics, and former science advisor to the Government of Pakistan. (en)